Pamsharpness User Manual(1) General Commands ManualPamsharpness User Manual(1) NAME pamsharpness - measure the sharpness of a PNM/PAM image SYNOPSIS pamsharpness [imagefile] DESCRIPTION This program is part of Netpbm(1). pamsharpness reads a Netpbm image (PNM or PAM) and prints a message to Standard Output giving a number that tells how sharp it is. Sharpness is a measure of how suddenly (in space) colors change in the image. pamsharpness computes the sharpness of the image as the average difference in intensity between each pixel and its 8 surrounding pix- els, in each of the color components (R, G, B). pamsharpness does not include the edges of the image, where there are not 8 pixels surrounding a pixel, in its computation. pamsharpness assumes that the image is a PNM or PNM equivalent PAM. If it isn't, the results are not necessarily meaningful. OPTIONS There are no command line options defined specifically for pamsharp- ness, but it recognizes the options common to all programs based on libnetpbm (See Common Options ⟨index.html#commonoptions⟩ .) SEE ALSO pamsharpmap(1), pammasksharpen(1), pam(1), pnm(1) HISTORY pamsharpness was added to Netpbm in Release 10.21 (March 2004). Bryan Henderson derived it from the program pnmsharp by B.W. van Schooten and distributed as part of the Photopnmtools package. DOCUMENT SOURCE This manual page was generated by the Netpbm tool 'makeman' from HTML source. The master documentation is at http://netpbm.sourceforge.net/doc/pamsharpness.html netpbm documentation 07 February 2004 Pamsharpness User Manual(1)
Generated by dwww version 1.15 on Sun Jun 30 21:06:15 CEST 2024.